deprecate scaffolder layout components

Signed-off-by: Paul Cowan <paul.cowan@cutting.scot>

plugins/scaffolder-react/api-report.md

@@ -65,6 +65,11 @@ export function createScaffolderFieldExtension<
   options: FieldExtensionOptions<TReturnValue, TInputProps>,
 ): Extension<FieldExtensionComponent<TReturnValue, TInputProps>>;
 
+// @public
+export function createScaffolderLayout<TInputProps = unknown>(
+  options: LayoutOptions,
+): Extension<LayoutComponent<TInputProps>>;
+
 // @public
 export type CustomFieldExtensionSchema = {
   returnValue: JSONSchema7;
@@ -122,6 +127,9 @@ export type FormProps = Pick<
   'transformErrors' | 'noHtml5Validate'
 >;
 
+// @public
+export type LayoutComponent<_TInputProps> = () => null;
+
 // @public
 export interface LayoutOptions<P = any> {
   // (undocumented)
@@ -289,6 +297,9 @@ export interface ScaffolderGetIntegrationsListResponse {
   }[];
 }
 
+// @public
+export const ScaffolderLayouts: React.ComponentType;
+
 // @public (undocumented)
 export type ScaffolderOutputLink = {
   title?: string;

plugins/scaffolder-react/src/extensions/index.tsx

@@ -25,7 +25,8 @@ import { Extension, attachComponentData } from '@backstage/core-plugin-api';
 import { FIELD_EXTENSION_KEY, FIELD_EXTENSION_WRAPPER_KEY } from './keys';
 
 /**
- * A type used to wrap up the FieldExtension to embed the ReturnValue and the InputProps
+ * The type used to wrap up the Layout and embed the input props
+ *
  * @public
  */
 export type FieldExtensionComponent<_TReturnValue, _TInputProps> = () => null;

plugins/scaffolder-react/src/next/index.ts

@@ -15,6 +15,7 @@
  */
 export * from './components';
 export * from './extensions';
+export * from './layouts';
 export * from './types';
 export * from './lib';
 export * from './hooks';

plugins/scaffolder-react/src/next/layouts/index.tsx

@@ -18,6 +18,10 @@ import { LAYOUTS_KEY, LAYOUTS_WRAPPER_KEY } from './keys';
  */
 import { attachComponentData, Extension } from '@backstage/core-plugin-api';
 
+/**
+ * A type used to wrap up the FieldExtension to embed the ReturnValue and the InputProps
+ * @public
+ */
 export type LayoutComponent<_TInputProps> = () => null;
 
 /**